The PRO Astro Clock is a Live Wallpaper clock and a real time simulation of our Solar System, including the Rocky Inner Planets (Mercury, Venus, Earth, Mars), the Gas Giants (Jupiter and Saturn) and the Ice Giants (Uranus and Neptune) all to scale for size and orbits. The moons of Earth, Mars (Phobos and Deimos) and Jupiter's Galilean moons () Io, Europa, Ganymede and Callisto) are included too without being to scale. The orbit and planet size are not in the right relation or most of the planet would appear as small dots. Beside being a clock with date display the app is very educational in showing the solar system with planets and moons in relation to the Earth moving through the year in real time. At each full hour an animation of the planet movements since January or July is shown.(it will take a few days after New Year to become obvious). Great for children and young students and adults with an interest in astronomy or people that just want to know where they are in space at any time.

Love this. Bought it. Needs a button that cycles the year manually so that I can see the animation more than once every time I power the screen. I like to see the positions of the planets for the last year go by slowly.

(74 stars)

by Solomon Roller on 18/02/2014

Nice !

(74 stars)

by Billy Culver on 03/01/2014

Know your place in time and space ...now, if a point of reference for our galactic center could be included this app would be perfect

(74 stars)

by Greg Robinson on 02/01/2014

Wonderful real time view of our solar system

(74 stars)

by James Gust on 26/12/2013

Low battery usage, great design. The year to date animations need some work. Edit: Responsive devs. Thanks for the update to ytd animations!

(74 stars)

by Graham Jones on 16/12/2013

Great app but Jupiter's moon Ganymede appears bigger than Earth but although bigger than Mercury, it is in fact less than half the size of Earth, otherwise 5 stars.Excellent app but Jupiter's moon Ganymede appears bigger than Earth but although bigger than the planet Mercury, it is in fact less than half the size of Earthed.